Feed-off-arm sewing machine



July 11, 1933. G. M. EAMES FEED-OFF-ARM SEWING MACHINE Filed Nov. 23,1929 5 Sheets-Sheet l Geolye ames IIQIIZ? y 11, 1933- c. M. EAMESFEED-OFF-ARM SEWING MACHINE 5 Shets-Sheet 2 Filed NOV. 23 1929 :{wveWcov Gearye/Ki'amas Waar dfl oznaq July 11, 1933. e. M. EAMES FEED-OFF-ARMSEWING MACHINE Filed Nov. 23, 1929 5 Sheets-Sheet 3 y 1933. G. M. EAMES1,917,756

FEED-OFF-ARM SEWING MACHINE Filed Nov. 23, 1929 5 Sheets-Sheet 4 July11, 1933. G. M. EAMES 1,917,756

FEED-OFF-ARM SEWING MACHINE Filed Nbv. 23. 1929 5 Shets-Sheet 5 .5! SIMwanton Gauge Mfi'ames Patented July 11, 1933 UNITED STATES PATENT OFFICEGEORGE 1n. EAMES, or ERmGErOR'r, CONNECTICUT, ASSIGNOR TO THE SINGER.MANU- FACI'URING COMPANY, OF ELIZABETH, N W JERSEY, A CORPORATION on NEWJERSEY FEED-OFF-ARM sEwINe MACHINE Application filed November 23, 1929.Serial No. $09,224.

This invention relates to sewin machines, more particularly to thefeed-0 -arm type, and has for an object to provide a machine of thistype with a work supporting arm which is so constructed as to entirelyovercome the danger of oil-leakage and the soiling of work incidentthereto.

Another object of the invention is to pro vide a feed-oif-arm machinewith stitch-formin mechanism of the multiple-needle lockstitch typeembodying laterally adjustable loop-taking devices and associatedbobbins, with simplified provisions for effecting the drive andadjustment of the loop-takers.

A further object of the invention is to effeet a simplified andefiicient organization of the loop-taker and feeding mechanisms withinthe work-supporting arm.

Still further, the invention has for an object to provide for theadjustment of the machine on the power-table to change the angularrelation of the work-supporting arm relative to the edge of thetable-top. I

With the above and other objects in view, as will hereinafter appear,the machine is constructed with a goose-neck the frame and mechanism ofwhich are of standard construction with the exception of the provisionof a vertical seat at the front side of the gooseneck at the bend of thelatter, for attachment of the one piece arm-casting. The arm-castingcomprises an upper forwardly projecting arm at the free end of which isan upper laterally extending arm carrying at its free end a verticallydepending arm atthe lower end of which is the work-supporting arm,proper, which extends toward and terminates below the" free end of theoverhanging gooseneck.

There is no mechanism within the upper forwardly projecting arm and, inthe upper laterally extending arm there is no mechanism except a rotarycounter-shaft which is journaled in bearings at the opposite ends ofsuch arm and carries loop-taker and feedactuating members between suchbearings. There is no dividing wall or partition between the spaceswithin the laterally extending and de ending arms to obstruct the flowof spent 0' from both counter-shaft bearings :to and downwardly throughthe depending vertical section.

arm into the oil reservoir at the latter.

. The loop-taker and feeding mechanisms are driven from thecounter-shaft by connecbottom of the tions within the verticallydepending arm vertically depending arm to permit ready access to theinterior thereof and, through this window, an oil gun may occasionallybe 1nserted to withdraw spent oil which collects in the reservoir at thebottom of the depending and work-supporting arms, the latter preferablyhaving a slight downward pitch toward such window.

The gooseneck is preferably secured to an iron base which may be boltedto the tabletop. The means for securing the gooseneck to the base is ofsuch a nature that, without changing the position of the base on thetabletop, the machine may be set up with the work-supporting arm indifferent angular relations to the edge of the table asyfor example, inparallelism with or at right angles to the table-edge. 0

In the accompanying drawings Fig. 1 1s a side elevation of afeed-ofi-arm sewlngrmachine embodyin the invention, the worksupportingarm eing shown in longitudinal Fig. 2 is a horizontal section throughthe work-supporting arm showing the arm-mechanism in plan. Fig. 3 is afront elevation of the machine with the upper laterally extending armand depending arm in vertical section. Fig. 4 is a plan view of themachine with the upper laterah 1y extending arm and belt-guard inhorizontal section. Fig. 5 is a vertical section on the line 5-5,Fig. 1. Fig. 6 is a fragmentary front elevation of the sliding doorconstruction through which access is gamed to the interior of thevertically dependlng member of the frame Fig. 7 is a plan view of barshown in Fig. 8.

The machine, in its preferred embodiment, comprises a gooseneck 1 ofstandard construction having at its overhanging end the usual head 2 forthe reciprocating needlebar 3 and presser-bar 4. The needle-bar 3carries two needles 5 arranged abreast of the line of seam-formation andthe presserbar carries the usual Presser-foot 6. The needle-bar 3 isreciprocated by the usual linkconnection 7 with the crank 8 on themainshaft 9 disposed horizontally within the overhanging member of thegooseneck and at its rearward end carrying the clip-belt pulley 10 andbalance wheel 11 with the main power-receiving V-groove pulley 12. Theusual take-up 13 and tension devices 14 are also included in thegooseneck 1.

Secured to the seat 15 at the front side of the bend in the gooseneck isthe one-piece hollow arm-casting comprising the upper forwardlyprojecting arms 16, the upper laterally extending arm 17, the verticallydepending arm 18 carrying the horizontal work-supporting arm 19terminating at its free end below the head 2 of the gooseneck.

J ournaled in the bearing-bushings 20, 21, Fig. 4, is the counter-shaft22 which is disposed within and lengthwise of the laterally extendingarm 17 and is used to drive the loop-takers and feeding mechanism withinthe work-supporting arm 19. The shaft 22 1s extended outside of theframe arms 16, 17 beyond the bearing-bushing 21, and has fixed to suchexternal extension a clip-belt pulley 23 which is connected to thepulley 10 by the clip-belt 24 around which is secured the belt-guard 25having a removable sidecover 26.

The loop-taker actuating mechanism comprises the two bevel-gears 27between the bearings 20, 21, which gears mesh with the plnions 28 fixedto the vertical loop-taker driving shafts 29 journaled in the alinedupper and lower bushings 30. 31 fixed by set screws 30. 31 in thebearing-supporting lugs 32 within the vertical member 18 of the frame.The vertical shafts 29 have fixed to their lower ends the bevel gears 33which mesh with the gears 34 on the loop-taker actuating-shafts 35extending lengthwise of and within the work-supporting arm 19.

The shafts 35 are ournaled in bearings 36 in the respective loop-takercarrier frames 37 which are supported for pivotal adjusting movementabout the axes of the respective drive-shafts 29 by being secured by setscrews 37 to the bushings 31 in which the shafts 29 are journaled. Attheir ends opposite the bushings 31, the frames 37 are formed with slots38, Fig. 2, through which pass the fastening screws 39.

J ournaled in bearings 40, Fig. 1, in the frames 37 are the loop-takershafts 41 to the lower ends of which are fixed the bevel gears 42meshing with the gears 43 on the respective actuating shafts 35. Theshafts 41 carry the usual rotary hooks 44 which seize needle-loops fromthe respective needles 5 and pass such loops around the respective lowerthread cases 44' to form two spaced rows of lockstitches. Obviously, theloop-takers may, by loosening the screws 39 and 31 be pivotally adjustedabout the axes of the respective driving shafts 29 and set to anydesired spacing of the needles within the limits provided. The presentloop-takers are geared to make two rotations to one reciprocation of theneedles, in accordance with the common practice.

The feeding n'lechanism is preferably constructed as follows :Mounted onthe fulcrum pedestal 45 within the work-supporting arm 19 is theeccentric shank 45 of the fulcrum pin 45" embraced by the fulcrum block46 on which rocks and slides the feed-lever 47 carrying the feed-dog48., Fulcrumed on a cross-pin 49 in the vertical arm 18 is thefeedadvance lever 50 the lower forked end of which embraces a block 51on the pivot pin 52 passing through a hole in the end of the feedleverand fixed by a set-screw 53, Fig. 3, in a hole in the lower end of thefeed-lift link 54. The upper forked end of the feed-advance lever 50embraces the bearing blocks 55 which embrace the adjustable feed-advanceeccentric 56 mounted on the shaft 22 between the bearings 20, 21. Thefeed-lift link 54- embraces the feed-lift eccentric 57 also mounted onthe shaft 22 between the bearings 20, 21. By turning the fulcrum pin 45"with its eccentric shank 45 the working level of the feed-dog 48 may beadjusted.

It will be noted in Fig. 1 that the bottom wall of the work-supportingarm is slightly pitched or inclined downwardly to the elbow 58 and thatthe spent oil 59 from the various working parts and hearings in the arms17, 18 and 19 collects at the elbow 58 and may be withdrawn from time totime by raising the window plate 60 and inserting an oil gun or othersuction device. The window plate 60 slides in the ways 61 provided inthe vertical arm 18 and is found in practice to be oil tight. Any oilwhich may spatter onto the inner face of the window will gravitate tothe lower edge of the latter and be drained by the short trough 67 intothe oil reservoir in the elbow 58.

The gooseneck 1 is secured by four bolts 62' desired one of a pluralityof possible angular relations with the edge of the table top, to suitthe requirements of the operator.

The invention isnot to be understood as limited in all of its aspects toa sewing machine of the lock-stitch type. The terms loop-taker,loop-taking mechanism, and the like, as used in the claims, are to beinterpreted broadly as covering any mechanism complementary to theneedle or needles and taking loops of thread from such needle or needlesin the formation of stitches.

Having thus set forth the nature of the invention what I claim herein isl. A sewing machine having, a frame including a gooseneck, an upperforwardly pro ecting arm joined to the gooseneck, a laterally extendingarm carried by the forwardly projecting arm, a depending arm carried bythe laterally extending arm, a

work-supporting arm carried by the depend-- ing arm, a main-shaftjournaled in said gooseneck, a counter-shaft journaled in said laterallyextending arm and connected to be driven by said main-shaft, spacedvertical shafts journaled in said vertically depending member and gearedto said counter-shaft, spaced horizontal shafts journaled in thework-supporting arm and geared each to its respective one of saidvertical shafts, spaced loop-takers connected to be driven each by itsrespective one of said horizontal shafts, and

- feeding mechanism including a feed-bar dispose-d within and lengthwiseof the worksupporting arm between said horizontal looptaker actuatingshafts.

2. A feed-off-arm sewing machine having a gooseneclr, a one-piece hollowarm casting secured to said gooseneck and including an upper forwardly.extending arm, an upper laterally extending arm, a depending. arm and ahorizontal work-suporting arm, a main-shaft journaled in said gooseneck,a counter-shaft disposed within and having bearings at the opposite endsof said laterally ext-ending arm, a reciprocating needle car-' ried bysaid gooseneck, a loop-taker and feeding mechanisms carried by saidwork-supporting arm, and loop-taker and feed actuat ing devices carriedby Said counter-shaft between said bearings.

3. A sewing machine having, in combination, a gooseneck including avertical standard and overhanging arm, said gooseneck being formed atits front side with a vertical seat at the top of said standard, ahollow forwardly extending arm joined to said seat, a hollow laterallyextending arm carried by the forwardly extending arm, a hollowvertically depending arm carried by the laterally extending arm, ahollow work-supporting arm carried by the depending arm and terminatingbelow the free end of said gooseneck, said forwardly extending,laterally extending, depending and work-supporting arms being cast inone piece, a main-shaft journaled in said gooseneck, a counter-shaftjournaled in said laterally extending arm, a driving connection betweensaid shafts ex ternally of said forwardly extending arm, a reciprocatingneedle actuated by said mainshaft, and loop-taking and feedingmechanisms in said work-supporting arm connected to be actuated by saidcounter-shaft.

4. In a sewing machine, a vertically reciprocating needle, a loop-taker,a horizontally disposed loop-taker actuating shaft, a verticallydisposed drivingshaft for said actuating shaft, gear connections betweensaid shafts; a frame in which said loop-taker actuating shaft isjournaled, and means for pivotally supporting said frame for movementabout the axis of said driving shaft.

, 5. A sewing machine having, in combination, a gooseneck including avertical standard and overhanging .arm, said gooseneck being formed atits front side with a vertical seat at the top of said standard, ahollow forwardly extending arm joined to said seat, a hollow laterallyextending arm carried by the forwardly extending arm, a hollowvertically depending arm carried by the laterally extending arm, ahollow work-supporting arin carried by the depending arm and terminatingbelow the free end of said gooseneck. said forwardly extending,laterally extending, depending and work-supporting arms being cast inone piece and constructed and arranged to permit the flow of spent 011from any point in the one piece casting to the elbow at the juncture ofthe depending and work-supporting arms, a main-shaft journaled in saidgooseneck, a counter-shaft journaled in said laterally extending arm, adriving connection between said shafts, a reciproeating needle actuatedby said main-shaft, and loop-taking and feeding mechanlsms in saidwork-supporting arm connected to be actuated by said counter-shaft.

6. A feed-oif-arrn sewing machine having a frame comprising gooseneckand bed castings, the-gooseneck casting being formed with a hollowvertical standard and a hollow overhanging bracket-arm terminating atits free end in a needle-bar head, said gooseneck casting being alsoformed on its front side with a seat at the top of said standard, saidbed casting comprising four hollow angularly related arms cast in onepiece and comprising an upper forwardly extending arm joined at one endto said seat, a laterally extending arm, carried by the free end of theforwardly extending arm, a depending arm carried by said laterallyextending arm, a work-supporting arm carried by said depending arm andterminating below said needle-bar head, a main-shaft in the overhangingbracketarm of said gooseneck, a reciprocating nee: dle-bar carried bysaid needle-bar head and actuated from said main-shaft, loop-taking andfeeding mechanisms in said work-su porting arm, a counter-shaft in saidlateral y extending arm, operative connections between saidcounter-shaft and said loop-taking and feeding mechanisms, and a drivingconnection between said main-shaft and said countor-shaft.

7. A feed-off-arm sewin machine having, in'combination, a gooseneckincluding a hollow vertical standard and a hollow overhanging arm, arotary shaft journaled in said gooseneck and extending within andlength- 'wise of said overhanging arm, a reciprocat- 8. Atwo-needlelock-stitch sewing machine I having a gooseneck and a hollow cylindricalwork-supporting framevfree at one end and at its other end joined tosaid gooseneck, a pair of reciprocating needles carried by saidgooseneck, a pair of vertical axis rotary hooks disposed within the freeend of said cylindrical work-supporting frame in cooperative relationwith said needles, a rotary shaft mounted in said ooseneck and connectedto'drive said nee es, a rotary shaft disposed within said hollowwork-supporting frame, separate and independent driving connections fromsaid last mentioned shaft to each of said hooks, means operativelyconnecting said shafts to one-another, and feedsupporting arm, aloop-taker shaft disposed within and lengthwise of said work-supportingarm, a loop-taker carrier-frame in which said loop-taker shaft isjournaled, said carrier-frame being removably secured to thework-supporting frame and being mounted wholly within the walls of thelatter, and means for actuating said loop-taker shaft.

10. In a sewing machine, a gooseneck, a reciprocating needle carried bysaid gooseneck, a rotary shaft journaled in said gooseneck, a secondrotary shaft parallel to said first mentioned shaft, a drivingconnection between said shafts, a hollow forwardly disposed arm in whichsaid second mentioned shaft is journaled, a depending arm at one end ofsaid forwardly disposed arm, a worksupporting. arm carried by saiddepending arm, loop-taking and feeding mechanisms in said depending andwork-supporting arms, said forwardly disposed arm, depending arm andwork-supporting arm being cast in one piece, and means connected to saidgooseneck and to the other end of said forwardly disposed arm forsupporting said forwardly disposed, depending and work-supporting arms.

In testimony whereof, I have signed my name to this specification.

GEORGE M. EAMES.

